// 圣杯模式
var inherit = (function () {
  var F = function () {};
  return function (Target, Origin) {
    F.prototype = Origin.prototype;
    Target.prototype = new F();
    Target.prototype.constuctor = Target; // 重写constructor
    Target.prototype.uberl = Origin.prototype; //记录原型继承自谁
  };
})();
